Tool for truing abrading-wheels.



Patented Sept. 20, 1910.

0.11. CIOLLMBR. TOL FOB. TRUING ABRADING WHEELS.

APPLIUATION :FILED APRA, 1909.

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UNITED STATES PATENT OFFICE.

OTTO I-I. COLLMER, OF SOUTH BEND, INDIANA, ASSIGNOR TO COLLMER BROTHERS, OF SOUTH BEND, INDIANA, A COPARTNERSHIP.

TOOL FOR TRUING- ABRADING-WHEELS.

Specification of Letters Patent.

Patented Sept. 20, 1910.

To all whom 'it may concern:

Be it known that I, O'r'ro l-I. COLLMER, a citizen of the United States, residing at South Bend, in the county of St. Joseph and State of Indiana, have invented certain new and useful Improvements in Tools for a tool designed for truing abrading wheels embodying a plurality of radially corrugated disksl adapted to be held in a suitable holder for'operation to dress the abrading wheels and which may be assembled into a unitary device prior to insertion in theiholder whereby the method of assembling the disks after a piecemeal fashion is obviated.

lWith theabove and other objects in View, the present invention consists in the combination. and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings and particularly pointed out in the appended claims, it being understood that changes may be made in the form, proportion, size and minor details without departing from the spirit or sacricing any of the advantages of the invention.

In the drawings Figure 1 illustrates the different parts of the device assembled and ready to be subjected to pressure. Fig. 2 is a sectional view through the device after the parts have been pressed into operative condition. Fig. 3 is a similar sectional view with the tool given a half-turn. Fig. 4 is an elevation .of an assembled device ready for application to its holder. Fig. 5 is a face view of the intermediate corrugated disk. Fie. 6 is a perspective view of one of the locking-washers, and Fig. 7 is a perspective view of one of the concavo-convex washers which is disposed `between the disks for cooperation with the locking washers.

Referring now more particularly to the accompanylng drawings, the reference characters 1, 2 and 3 indicate the disks, the disks i 1, and 3 being alike in formation and the disk 2 being the same formation as disks 1 and 2, save that the intermediate disk 2 has `oppositely disposed pair of openings 4 and 5, the pair of openings 5 of the intermediate disk 2 being adapted to aline with the pair of openings 6 at the center of the disk 8, there being a pair of openings 7 in the disk 1 adapted to aline with the pair of openings 4 in the intermediate disk 2, all for a purpose presently explained. The disks are each provided with radially directed corrugations 8, which result in the )eripheries of each disk having a zigzag ormation, as clearly shown in Figs. 1 and 4. To assemble the disks I have them provided with an opening 9 so that they may be slipped upon a short spindle 10 and between the disks I dispose concave-convex washers 11, there being openings 12 formed in the concavo-eonvex washers 11 so that they may be slid lupon the spindle 10. These washers 11 are each provided with oppositely disposed flanges 13 for a purpose presently explained.

The characters 14 and 15 indicate washers, each provided with an opening 16 adapted to embrace the spindle 10, so that said washers may be disposed adjacentthe outer faces of the hub portions 16 of the respective disks 1 and 3. Formed with the bodies of the washers 14 and 15 are pairs of locking arms 17, the locking arms 17 of the washer 14 heilig adapted to pass through the openings 7 in the disk 1 and also through the openings 4 in the intermediate disk 2, while the locking arms 17 of the washer 15 are designed to pass through the openings 6 and 5 of the disks 3 and 2, respectively.

When the disks and washers 11, 14 and 15 have been assembled in the manner stated, the device is ready to be subjected to pressure, so that all of the parts may be formed into a unitary device. Pressure may be exerted upon the parts in any suitable manner, but, of course, preferably in a direction to force the disks toward one another, and when such pressure is brought to bear upon the parts, the extremities of the locking arms 17 of the disks 14 and 15 are forced against the convex faces of the concavo-convex washers 11, which permits of the disks being brought close together, and in fact permits them to be brought into close juxtaposition because the pressure results in the locking arms 17 riding upon the convex faces of the washers 11 and slide upon the oppositely disposed flanges 13 of the concavo-convex washers, as shown in Figs. 2 and 3, thereby upsetting the locking arms 17 between the disks and against said {ianges 13, and since the locking arms 17 of the washer 14 are disposed at a direct right angle to the plane of the locking arms 17 of the washer 15, as shown in Figs. 1, 2 and 3, both of the outside disks 1 and 3 are firmly locked to the intermediate disk 2 with the locking arms completely concealed from view. The bodies of the washers 14 and 15 are substantially counter -sunk within the outermost disks 1 and 3, because of the fact that the radial corrugations of the disks eX- tend outwardly of the plane of the bodies or hub portions 16 of the outermost disks, as clearlyshown in Fig. 2. After the device'has been subjected to pressure for the purpose of effecting the interlocking of the parts in the manner herein stated, the same may be readily removed from the spindle 10 and be easily applied to any suitable holder, not shown, for use to dress abrading tools.

What is claimed is 1. A tool for truing abrading wheels comprising radially corrugated disks, each having a central opening and also smaller' openings, a spindle inserted through the central openings, `a ,washer disposed adjacent one of the outermost disks and having elements passing through the smaller openings of the latter and through certain of the smaller openings of the intermediate disk, a second washer disposed adjacent the other outermost disk 'and having elements passing through its smaller openings and through certain of the smaller openings of the intermediate disk, said elements locking all of the disks rigidly together, with the inner ends of the locking elements confined between the disks.

2. A tool for truing abrading wheels comprising 'a plurality of disks, concavo-convex washers disposed between the disks, washers disposed adjacent the outer faces of the outermost disks and having arms passed through the outermost disks and also through the intermediate disk and at their extremities bearing against the convex faces of the concavo-convex washers, the latter washers each having oppositely disposed flanges, said arms being adapted to be upset against the concavo-convex washers with their extremities lying' against said flanges.

3. A tool for truing abrading wheels comprising three disks, each having a central opening, the two outer disks also having two smaller oplenings disposed diametri-cally opposite eac other, the intermediate disk having four openings adjacent the central opening, each smaller opening being diametrically opposite another smaller opening, cony with the intermediate disk and *locking` washers positioned adjacent the outer faces of the outer disks and having integral arms passing through the openings in an outer disk and the intermediate disk, with the ends of the arms engaging the convex portions of the concavo-convex washers whereby the arms are spread and the disks are locked together.

4. A tool of the character described comprising three disks, each having openings therein, and means disposed adjacent the outer face of each ofthe outermost disks each of said means having arms projecting through the openingsof the corresponding outer disk and openings in the intermediate disk with the free ends of the arms disposed adjacent opposite faces of the intermediate disk and upset to effect an interlocking of the disks together.

5. A tool of the character described comprising outer disks, each having a pair of openings therein, the pair of openings of one outer disk being arranged at right angles to the pair of openings of the other outer disk, an intermediate disk having one pair of openings for alinement with the openings of one outer disk and another pair of openings for alinement with the openings of the other outer disk, and locking means passing through the alining openings of the disks.

6. A tool of the character described comprising outer disks, each having av pair of openings therein, the pair of openings of one outer disk being arranged at right angles to the pair of openings of the other outer disk, an intermediate disk having one pair of openings for alinement with the openings of one outer disk and another pair of openings for alinement with the openings of the other outer disk, washers having convex surfaces disposed between the disks, and locking lmeans passing through alining openings ofthe disks and engaging the con- Vex surfaces of the washers.

7. A tool for truing abrading wheels comprising a plurality of disks, -concavo-convex washers disposed between the disks, washers disposed adjacent the outer faces of the outermost disks each having arms which respectively pass through the adjacent outermost disk and also through the intermediate disk and at their extremities bearing against the convexed faces of the concavo-convex washers, said arms being adapted to be upset against thecon-cavo-convex washers with their extremities lying against said concaveconvex washers.

8. A tool of the character described comprising three disks, and locking arms passed through the outer disks and also through the intermediate disk With their inner ends 5 spread and disposed adjacent opposite sides of the innermost disk to lock al1 of the disks together.

In testimony whereof I aiix my signature, in presence of two witnesses.

OTTO H. COLLMER.

Witnesses GEORGE OLTscH, G. M. COLE. 

